Worry stones, also known as palm stones or thumb stones are smooth polished gemstones. They have a thumb-sized indentation so you can carry it in your pocket and rub it for relaxation and stress relief. People use them by holding the stone between the index finger and thumb and rubbing one's thumb back and forth across the stone.  It is believed to be a self-soothing exercise.
Green Aventurine is thought to be the luckiest of all crystals, especially in manifesting prosperity and wealth.  It helps bring optimism and embrace change.  Green Aventurine amplifies leadership qualities.  It is also helps bring happiness and humor to your life.